3-Thiophenecarboxylic acid, 4,5-dimethyl-2-[[(4-methylphenyl)sulfonyl]amino]-, ethyl ester;Ethyl 4,5-dimethyl-2-(((4-methylphenyl)sulfonyl)amino)-3-thiophenecarboxylate;Ethyl 4,5-dimethyl-2-{[(4-methylphenyl)sulfonyl]amino}thiophene-3-carboxylate
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